Crown, was RE:Curve on Bridge Bottom

[Erwinspiano@AOL.COM]

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In a message dated 5/3/2002 8:06:28 AM Pacific Standard Time, A440A@AOL.COM 
writes:


> Subj:Re: Crown, was RE:Curve on Bridge Bottom 
> Date:5/3/2002 8:06:28 AM Pacific Standard Time
> From:<A HREF="mailto:A440A@AOL.COM">A440A@AOL.COM</A>
> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> Sent from the Internet 
> 
>             Ed

  I've seen demonstrations of this where a 1/8" thick by 1' wide and 30 " 
long placed between end supports on a long plank. It was fit so it just 
slipped in then a business card was slipped in between one of the ends and 
the stick bowed right up quite a bit.
    I understand your skeptical question. Tomorrow I'll take  the same long 
rib and make the same kind of jig/fixture and play with and see about the 
resistence I'll post Mon. or so with the observation. O.K.
  I'm curious too.
    >.Still looking for an original thought>>>>>>Dale>>>>>>>>

> 
> Dale writes: 
> >  I toook a long 
> >rib (60 ft. radiused) unattached to any thing and simply bent it down flat
> >as  an experiment. Imperceptable change in length to the eye.
> > No more argument from this casual observer>
> 
> Hmm,  what about the difference in resistance to bending it flat when both 
> ends are captured as opposed to lying there free on the bench?  
> Wondering, 
> Ed Foote 


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